19. Crown Princess Mette-Marit and Princess Ingrid Alexandra of Norway also joined in the brooch parade. Mette-Marit secured her ribbon with a diamond star and crescent brooch, while Ingrid Alexandra looks to have selected a tiny gathering of diamonds.

16. Later in the week, the Belgian and Dutch queens joined forces at a sculpture exhibition in The Hague. Mathilde wore simple pearl and diamond stud earrings and a vibrant blue-and-orange outfit and hat...

15. ...while Maxima paired her blue-and-orange outfit and hat with vibrant orange and diamond pendant earrings and her usual bracelets. (Wouldn't you have loved to listen to the phone calls these two made while planning their coordinating attire???)

14. In Britain, the royals gathered on Monday at the annual Chelsea Flower Show, where Prince Harry's Sentebale charity presented a garden. The Queen wore the floral brooch given to her by the show organizers in 2012 as a Diamond Jubilee present.

10. In Spain, the royal family gathered to celebrate the first communion of the Princess of Asturias. Leonor wore her school uniform and blended in with the rest of her classmates (although she is wearing a small necklace as well), but her mother, Queen Letizia, was regal in a pair of earrings by Tous.

6. The Prince of Wales and the Duchess of Cornwall were also on an official trip this week, visiting the Republic of Ireland. Camilla chose a very appropriate shamrock-shaped brooch on Tuesday in Galway.

5. During an emotional visit to Mullaghmore (the site of Lord Mountbatten's murder) on Wednesday, Camilla wore pearl earrings with a new brooch. The piece, which is shaped like a traditional Claddagh ring, was given to her at the Claddagh National School on Tuesday.

3. If you were looking for major sparkle this week, your search surely brought you to the film festival at Cannes. The French actress Clotilde Courau, who is married to Emanuele Filliberto of Savoy, posed for a portrait on Sunday in a glittering necklace and ring.

1. The French riviera may be exciting, but I'm giving my top spot of the week to a stalwart favorite: the Jardine Star Brooch, which glittered on Queen Elizabeth II's jacket at a garden party at Buckingham Palace on Wednesday.